What is the sum of the measures of all the interior angles of a regular polygon of 9 sides?
A) 1260 B) 1440 C) 1800 D) 2340
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Answer:
1260°
Step-by-step explanation:
The polygon of 9 sides is known as nonagon. The measure of each angle of a regular nonaogon is 140°. Angle sum of a nonagon is 1260°.
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